Robert J Broughton

6560297, May 6, 2003

Jun 3, 1999

09/325100

Robert J. Broughton - Derry NH

Analog Devices, Inc. - Norwood MA

H04L 2720

375308, 375295, 455553

A rejection converter is disclosed for use in a transmitter for operating in at least either of a first mode for transmitting signals within a first frequency range, and a second mode for transmitting signals within a second frequency range. The rejection converter includes an input unit for receiving an input signal in at least either of the first or second frequency ranges. The rejection converter also includes a rejection unit for rejecting at least one spurious harmonic signal associated with the first frequency range that falls within the second frequency range. The rejection converter permits signals in the second frequency range to be passed when the output signal is within the second frequency range.

6785518, Aug 31, 2004

Feb 15, 2002

10/077286

Simon Atkinson - Heathfield, GB
Jonathan R. Strange - Reigate, GB
Robert J. Broughton - Derry NH
Alexander Shvarts - late of Arlington MA

Analog Devices, Inc. - Norwood MA

H04M 138

455 86, 375308

A transceiver circuit is disclosed for use in radio frequency communication systems. The circuit includes a transmitter circuit, a receiver circuit and a local oscillator circuit. The local oscillator circuit includes at least one oscillator input signal having a frequency that is a non-integer multiple of the transmission frequency of the radio frequency communication system. The oscillator input signal is used to produce a transmitter local oscillator signal and a receiver local oscillator signal.

7558542, Jul 7, 2009

Jun 9, 2006

11/450115

Sanjay Nandipaku - North Andover MA, US
Roxann Blanchard - Chester NH, US
Robert Broughton - Chester NH, US
Robert G. Gels - Boston MA, US
Cecile Masse - Methuen MA, US

Mediatek Inc. - Hsin-Chu

H01Q 11/12
H04B 1/04

4551272, 332145

A transmitter circuit is disclosed for use in a multi-frequency wireless communication system. The transmitter circuit includes an input modulation unit, a phase modulation system, and an amplitude modulation system. The input modulation unit receives at least one signal that is representative of information to be modulated. The phase modulation system is coupled to the input modulation unit and provides a phase modulation on an output signal. The phase modulation system includes a phase detection system and an adjustable power amplifier. The amplitude modulation system is coupled to the input modulation unit and provides amplitude modulation on the output signal. The amplitude modulation system includes an amplitude detection system for providing an output signal to the adjustable power amplifier, and a variable gain amplifier coupled to the adjustable power amplifier.

7795968, Sep 14, 2010

Jan 12, 2009

12/319898

Yang Li - Cambridge MA, US
Robert Broughton - Chester NH, US
James Bonkowski - Cary IL, US
Peter Bacon - Derry NH, US

Peregrine Semiconductor Corporation - San Diego CA

H03F 3/68

330129, 330 51

An RF PA operable in two or more selectable power ranges is disclosed. Switches configure the circuit for each range such that an amplifier device corresponding to the range provides final amplification, and all lower power amplifier devices also amplify the signal. An exemplary design includes a low power amplifier configurable for operation solo, or in parallel with a medium power amplifier, to deliver an appropriately matched signal either directly to the RF PA output, or first to the input of a high power amplifier for the highest power range. The signal in all ranges of the exemplary design is conditioned in part by the matching circuitry disposed between the high power amplifier and the RF PA output, which traverses no switches in high power range operation. The entire RF PA, including switches, control and matching circuitry, is fabricated on a single monolithic integrated circuit, an achievement may be facilitated by UTSI CMOS processing.

7961052, Jun 14, 2011

Oct 28, 2009

12/589800

Peter Bacon - Derry NH, US
Robert Broughton - Chester NH, US
Yang Li - Woburn MA, US
James Bonkowski - Cary IL, US
Neil Calanca - Crown Point IN, US

Peregrine Semiconductor Corporation - San Diego CA

H03F 3/14

330307, 330311

A novel RF power amplifier integrated circuit (PA IC), unit cell, and method for amplifying RF signals are disclosed. One embodiment of a PA IC includes at least two linear arrays comprising transistor device units, and at least one linear array comprising capacitors. The transistor device units include source nodes that are jointly coupled to a source bus, and selected gate nodes that are jointly coupled to a gate bus. First electrodes of the capacitors are also jointly coupled to the source bus, and second electrodes of the capacitors are jointly coupled to the gate bus. Each linear array comprising capacitors is disposed between at least two linear arrays comprising transistor device units. In one embodiment, the PA IC includes unit cells. In some embodiments, each unit cell comprises two transistor device units and one or more capacitors.

8022734, Sep 20, 2011

Aug 25, 2008

12/197636

Robert Broughton - Chester NH, US

Peregrine Semiconductor Corporation - San Diego CA

H03K 5/22

327 65, 327 58, 327 59, 327 60, 327 61, 327 62, 4551153

A power detection system is disclosed that includes a detector circuit and a comparator circuit. The detector circuit includes a first transistor, a second transistor that is not identical to the first transistor, and a third transistor that is substantially identical to the first transistor. Each of the transistors is commonly coupled to a current source and is coupled to a differential input voltage. The comparator circuit is for providing an output that is representative of whether the input voltage is above or below a threshold voltage responsive to a difference between the first transistor and the second transistor.

8487706, Jul 16, 2013

Jan 25, 2010

12/657728

Yang Edward Li - Woburn MA, US
Robert Broughton - Chester NH, US
Peter Bacon - Derry NH, US
James Bonkowski - Cary IL, US

Peregrine Semiconductor Corporation - San Diego CA

H03F 3/04

330311, 330310

A power amplifier with stacked, serially connected, field effect transistors is described. DC control voltage inputs are fed to the gates of each transistor. Capacitors are coupled to the transistors. The inputs and the capacitors are controlled to minimize generation of non-linearities of each field effect transistor and/or to maximize cancellation of distortions between the field effect transistors of the power amplifier in order to improve linearity of the power amplifier output.

20130208396, Aug 15, 2013

Aug 15, 2012

13/586738

Shawn Bawell - Amherst NH, US
Robert Broughton - Chester NH, US
Peter Bacon - Derry NH, US
Robert W. Greene - Lowell MA, US
Tero Tapio Ranta - San Diego CA, US

H01G 7/00

361277

The present disclosure describes tuning capacitors with tapered and reconfigurable quality factors. Digitally tuned capacitors (DTCs) that provide a variable quality factor (Q) while maintaining a constant or near constant capacitance as well as DTCs that provide one or more Q values in a tapered distribution while maintaining a constant or near constant capacitance are described. The present disclosure also describes DTCs that provide one or more capacitances in a tapered distribution and one or more Q values in a tapered distribution.